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Author Topic: 541 Strange bootloader  (Read 2933 times)

August 12, 2013, 07:19:31 pm
Hi

I may be being dumb, but when connected via serial to my NC541CPU all i see is:

ÖÊ=y=yTcæ%æ¦æ³  räs     ÒrR²ä“ù3¥²$¤I2òÓfÓæs³¥2¤I¤I2²~:~n~Š~¶jv*ZN.~BF~Êz~::~6>:>ÖÊÊjJB6~²Zj~Z2~>:>>>>>>~ö.j2N~æNz2^~²Zj~Z2~>.>>>>>~ö.j2ÖÊöBz6n~nj2ZbFjn~v~¢ZFvBFnÖÊÞz6n"z6j~2*>>B6.~>6B&Znjn~z.~¢ZFvBFnÖÊòB>6Zb^.~^rZ~¢ZFvBFn~ÎZJZ.jn~6>>:~J~6>>&F~úNN~6Zb^.2~6j2j6&jnFÖÊ/HH‘s   ÒrR²ä“  22ÒRd¤r

This goes on and then eventually stops after about 3 secs. I may be being dumb, and havent set the serial connection, or this is a totally corrupt bootloader - does anyone have any ideas on how to fix this??

Thanks


Nick

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August 13, 2013, 02:48:45 am
this looks like either:
a) wrong cabling
b) wrong settings for baurate/parity/stopbits

August 13, 2013, 03:20:46 am
Thanks, I have the following cabling:

Pin 2 Rx on db9 serial to pin 1 on j2
Pin3 tx on db9 serial to pin 2 on j2
Pin 5 gnd on db9 serial to pin 3 on j2

Is this right? Then it's 115200, n 1 for connection

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August 16, 2013, 03:49:16 am
you cannot connect the cam directly to your PC.
The cam uses 0/3.3V for signalling, the PC -12/+12V
You need a levelconverter. See the wiki for more detail